The United States deported 4.6 million people between 2003 and 2018, for an average of about 300,000 per year. The highest years, of about 400,000, were during the Obama administration. The two years under Trump were 225,000 or less. The Bush years averaged about 250,000, but went up in 2008.
Compare these deportations with the stock and flow of unauthorized persons. On average, about one person was deported for roughly every 40 unauthorized persons who were in the U.S. at the end of the year.
The total number of unauthorized persons in the country in 2003 was probably about 12 million. That has declined modestly to about 11 million. During this time, several hundreds of thousands of persons, each year, either entered illegally or over-stayed their temporary visas, while a hard to estimate number of unauthorized persons ever year left voluntarily and undetected.
This graph shows the distribution of deported persons by state, 2003 – 2018. The numbers for Arizona, California and Texas are very high due to their borders with Mexico.
Data from here.